package cn.exrick.xboot.modules.iocr.util;

import cn.exrick.xboot.common.utils.ResultUtil;
import cn.exrick.xboot.common.vo.Result;
import com.fasterxml.jackson.databind.ObjectMapper;
import okhttp3.*;
import org.activiti.engine.impl.util.json.JSONObject;
import org.springframework.web.bind.annotation.PostMapping;

import java.io.IOException;
import java.net.URLEncoder;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;
import java.util.List;
import java.util.Map;

public class IocrUtil {
    public static final String API_KEY = "NG2YS3SKOsUu6lKcfqSpyvHa";
    public static final String SECRET_KEY = "rpAEUv9Lhm4rFwhHbQqWxF5yCaU1tvHY";

    static final OkHttpClient HTTP_CLIENT = new OkHttpClient().newBuilder().build();

    public static List<Map> test(String imgUrl, String templateSign) throws IOException {
        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
        RequestBody body = RequestBody.create(mediaType, "image=" + getFileContentAsBase64(imgUrl, true) + "&templateSign=" + templateSign);
        Request request = new Request.Builder()
                .url("https://aip.baidubce.com/rest/2.0/solution/v1/iocr/recognise/finance?access_token=" +
                        getAccessToken())
                .method("POST", body)
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .addHeader("Accept", "application/json")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();
        String s = response.body().string();
        ObjectMapper objectMapper = new ObjectMapper();
        Map map = objectMapper.readValue(s, Map.class);
        Map data = (Map) map.get("data");
        List<Map> ret = (List<Map>) data.get("ret");
        System.out.println(ret);
        return ret;
    }

    /**
     * 获取文件base64编码
     *
     * @param path      文件路径
     * @param urlEncode 如果Content-Type是application/x-www-form-urlencoded时,传true
     * @return base64编码信息，不带文件头
     * @throws IOException IO异常
     */
    static String getFileContentAsBase64(String path, boolean urlEncode) throws IOException {
        byte[] b = Files.readAllBytes(Paths.get(path));
        String base64 = Base64.getEncoder().encodeToString(b);
        if (urlEncode) {
            base64 = URLEncoder.encode(base64, "utf-8");
        }
        return base64;
    }


    /**
     * 从用户的AK，SK生成鉴权签名（Access Token）
     *
     * @return 鉴权签名（Access Token）
     * @throws IOException IO异常
     */
    public static String getAccessToken() throws IOException {
        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
        RequestBody body = RequestBody.create(mediaType, "grant_type=client_credentials&client_id=" + API_KEY
                + "&client_secret=" + SECRET_KEY);
        Request request = new Request.Builder()
                .url("https://aip.baidubce.com/oauth/2.0/token")
                .method("POST", body)
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();
        return new JSONObject(response.body().string()).getString("access_token");
    }
}
